Envelope



May 5, 1931. PASURKA I 1,803,348

' ENVELOPE Filed May 13, 1929 i? I @M QZUE TEL Patented May 5, 1931cIiAnLEsrAsuRxA, or CHICAGO, ILLINoIs ENVELOPE Application fileci May13, 1929. Serial No. 362,734.

My invention relates to improvements in envelopes.

One of the objects of the invention is to provide an improved envelopewhich when sealed may be quickly and conveniently opened without the useof mechanical shearing devices. In this connection I aim to provide anenvelope which is so formed as to have all of the advantages of a sealedenvelope, but which, by reason of a previously scored margin, may beeasily opened by tearing off a marginal portion of the envelope alongthe scored line.

more specific object is to provide an 5 envelope of the above characterin which the scored lines on opposite sides of the envelope are locatedout of alignment-that is to say, at differently spaced locationsrelative to the adjacent edge of the envelope, whereby the marginalportion of the envelope will not readily bend or fold along the scoredlines, but which nevertheless, will be sufficiently weak to permit thescored marginal portion to be readily torn along the scored lines.

Another object is to so form the said .scoring by a series of smallperforations and to so curve. the lines on opposite sides of theenvelope that they will align with each other at opposite edges ofthe'envelope, the perforated lines of the several flaps on the back ofthe envelope being so curved that they will coincide with each otherwhen the said flaps are folded one upon another.

A further object is to provide an envelope of the above character with amarginal surface between the scored line and the adjacent edge of theenvelope which will serve to direct the attention of a recipient of aletter to-the purpose of the perforated margin. In this connection I aimto provide one or both sides of the perforated margins with anundulating surface for example, by

crimping, embossing or indenting said surface.

In the drawing: J Fig. 1 illustrates the front side of an envelope madein accordance with my invention. Fig. 2 shows .the back of the envelopewith a portion of the sealing flap turned upwardly to illustrate themanner in which the scored lines coincide when the said envelope issealed.

.Fig. 3 is a sectional view taken on line 33' of Fig. 1.

In the drawing 1- have shown one preferred embodiment of my invention inthe form of an ordinary letter envelope. It should be understood,however, that this 60 particular type and size of envelope is shownherein merely for the purpose of convenience and that the principle ofthe invention can be readily embodied in various size envelopes andanalogous containers.

The envelope herein shown is made from a paper blank having a plainfront side 10 and angular flaps 11, 12 and 13, the latter of which areturned inwardly and sealed together to form the back of the envelope.The flap 12 preferably, but not necessarily, overlaps the lower marginsof the flaps 11 and 13. The reference numeral 14 indicates the sealingand closing flap of the envelope. In order to facilitate the opening ofthe envelope, I provide opposite faces of the envelope and preferably,though not necessarily, at opposite ends, with score lines 15 and 16,arranged at different distances from the adjacent edge and extend acrossthe envelope. 8 The lines define narrow marginal strips on the front andback of the envelope which, being weakened along the scored lines, may

i be readily torn off along said lines by pulling on the perforatedmargins in the plane of the envelope or by the well known lateralshearing twist of said marginal portions. The lines 15 and 16 arepreferably perforated and are curved near the middle of the envelope toprovide thumb and finger recesses 17 and 18 when the end margin of theenvelope is removed.

The ends 19-19 of the perforated line 16 preferably curve toward andjoin the perforated line 15 at the upper and lower edges 5 of theenvelope. The portions 20-20 of the line 15 which extend across theflaps 12 and 14 are curved so as to coincide with the curvedportions'19-19 when the envelope is sealed.

The space between the perforated line 15 we and the adjacent edge of theenvelope may be and preferably is crimped or otherwise suitably formedwith a series of undulations 21, which serve to directthe attention ofthe recipient of the letter to the perforated lines along which theenvelope should be opened and which also by overlapping one of theperforated lines serves to reinforce the marginal portion of theenvelope.

I claim:

1. An envelope adapted to be opened by tearing and having a perforatedline extending across the front adjacent one edge of the envelope, aperforated line extending across the back thereof adjacent said edge toprovide lines along which said end 1s severed when opening the envelope,the said perforated lines being arranged out of alignment to resistfolding of the envelope along said lines.

2. An envelope adapted to be opened by tearing having a perforated lineextending across the front adjacent one edge of the envelope and aperforated line extending across the back thereof adjacent said edge toprovide lines along which said end portion is removed when opening theenvelope, the said perforated lines being located at different distancesfrom the end of the envelope, but joining one with the other at theupper and lower margins thereof.

3. An envelope having perforated lines extending across the front andback, respectively, defining front and back marginal surfaces ofdifferent widths, the said marginal surface of one side of the envelopebein formed with a series of diagonally dispose undulations arranged instaggered relation to reinforce the perforated marginal portion of theenvelope.

4. An envelope having perforated lines extending across the front andback, respectively, defining front and back marginal surfaces ofdifferent widths, the said marginal surface on one side of the envelopebeing crimped to provide said surface with a series of undulations whichextend across the perforated line on the opposite side of the envelope.

CHARLES PASURKA.

